JP2007126274A - Medium feeding apparatus, liquid ejecting apparatus and recording apparatus - Google Patents

Abstract

A medium feeding device capable of easily performing maintenance work of a feeding roller unit for feeding a medium to be fed and maintaining the mounting position accuracy of the feeding roller unit and the medium feeding thereof. An object of the present invention is to provide a liquid ejecting apparatus and a recording apparatus including the apparatus.
A feed roller unit 82 includes a roller holder 21 that holds a feed roller 20, and the roller holder is configured to be detachable from a roller shaft 82a. As a result, only the roller holder can be removed and the feeding roller can be replaced without removing the roller shaft, so that the maintenance operation of the feeding roller unit can be easily performed and the mounting position accuracy of the feeding roller unit can be reduced. Can be maintained.
[Selection] Figure 6

Description

  The present invention relates to a medium feeding apparatus that feeds a medium to be fed, a liquid ejecting apparatus including the medium feeding apparatus, and a recording apparatus.

  An ink jet printer, which is one of general recording apparatuses, is provided with an automatic paper feeder at the upper part on the back side. The automatic paper feeder includes a paper feed roller that feeds paper supported by a paper support. The paper feed roller includes a ring-shaped roller member made of rubber or the like that directly contacts the paper, and a roller shaft that rotates while holding the roller member. The roller shaft into which the roller member is fitted is configured to rotate with both ends supported by the paper feed frame (see Patent Document 1).

JP-A-8-333026

  In the maintenance work of the ink jet printer described above, the operator removes the automatic paper feeder from the printer body, and then removes the paper feed roller from the automatic paper feeder. Then, the roller member is removed from the roller shaft, and a new roller member is attached to the roller shaft. Then, it is necessary to attach a paper feed roller to the automatic paper feeder and then incorporate the automatic paper feeder into the printer body. Therefore, for an unskilled worker, this maintenance work may take too much time. Furthermore, the attachment position of the paper feed roller may change before and after the work, and the recording state may also change.

  The present invention has been made in view of the various problems as described above, and an object of the present invention is to easily perform maintenance work of a feeding roller unit that feeds a medium to be fed, and a feeding roller. An object of the present invention is to provide a medium feeding device capable of maintaining unit mounting position accuracy, a liquid ejecting apparatus including the medium feeding device, and a recording apparatus.

  To achieve the above object, in the medium feeding device of the present invention, in the medium feeding device having a feeding roller unit for feeding a medium to be fed, the feeding roller unit is a roller holder for holding a feeding roller. The roller holder is configured to be detachable from the roller shaft. As a result, only the roller holder can be removed and the feeding roller can be replaced without removing the roller shaft, so that the maintenance operation of the feeding roller unit can be easily performed and the mounting position accuracy of the feeding roller unit can be reduced. Can be maintained.

  Further, the attaching / detaching portion of the roller holder on the roller shaft is formed so that the phase is always the same when the roller holder holding the feeding roller is attached. As a result, the phase adjustment operation of the feeding roller is not required during the maintenance operation, and the maintenance work man-hour can be reduced. In addition, the roller holder is formed in a D shape in a side view, and an opening is formed in the linear portion so that the roller holder is attached to and detached from the holder attaching / detaching portion. Thereby, attachment / detachment with respect to the holder attaching / detaching part of a roller holder can be easily performed from one direction. Further, the roller holder and the holder attaching / detaching portion include a fixing portion for fixing the roller holder holding the feeding roller to the holder attaching / detaching portion. Thereby, dropping of the roller holder from the holder attaching / detaching portion can be prevented only by attaching the roller holder to the holder attaching / detaching portion.

  In order to achieve the above object, the liquid ejecting apparatus of the present invention is a liquid ejecting apparatus that ejects a liquid onto a medium to be ejected, and includes the above-described medium feeding devices. The recording apparatus of the present invention is a recording apparatus for recording on a recording medium, and includes the above-described medium feeding devices. Thereby, it is possible to provide a medium feeding device or a recording device that exhibits the above-described effects.

  Embodiments of the present invention will be described with reference to the drawings. The embodiments described below do not limit the invention according to the claims, and all the combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

  FIGS. 1 and 2 are perspective views of an overall appearance configuration of an ink jet printer, which is one of recording apparatuses according to an embodiment of the present invention, seen obliquely from the front and rear, and FIG. FIG. 4 is a perspective view showing the outline, and FIG. 4 is a sectional side view showing the outline of the internal configuration. This ink jet printer 100 is, for example, a sheet of paper of a size such as L size / 2L size, postcard, JIS standard A4 size, A3 size nobi, A2 size, etc. (hereinafter simply referred to as paper (feed medium, ejected medium, (Recording medium)) and a function capable of recording with ink (liquid).

  As shown in FIGS. 1 and 2, the inkjet printer 100 is entirely covered with a substantially rectangular parallelepiped housing 101. An operation unit 110 is provided on the upper right front side of the housing 101 shown in FIG. 1, and a cartridge storage unit 120 is provided on the upper left front side of the housing 101 shown in FIG. Further, a first rear paper feed unit 130 is disposed on the rear side of the upper surface shown in FIG. 1, and a second rear paper feed unit 140 is disposed on the back side shown in FIG. A paper discharge unit 150 and a front paper supply unit 160 are arranged on the front side shown in FIG. 1, and a waste ink collection unit 170 is arranged on the right side of the front side shown in FIG. In addition, inside the ink jet printer 100, the sheet conveying unit 180 shown in FIGS. 3 and 4 including the characteristic part of the present invention, the control unit 190 shown in FIGS. 2 and 4, and FIGS. The recording unit 200 shown in FIG.

  As shown in FIGS. 1 and 2, a rectangular opening 102 is formed between the operation unit 110 and the cartridge storage unit 120 on the upper surface of the housing 101 and the first rear paper feeding unit 130. . The opening 102 is covered with a printer cover 210 having a substantially rectangular flat plate shape. The printer cover 210 is attached so as to be rotatable in the direction of the arrow a in the figure around a rotation axis at the rear end. The user can easily perform maintenance work of internal mechanisms such as the paper transport unit 180 and the recording unit 200 through the opening 102 by lifting the printer cover 210 and opening the opening 102.

  As shown in FIGS. 1 and 2, the operation unit 110 includes a substantially rectangular operation panel 111, and a liquid crystal panel 112 that displays an operation state and the like is disposed at a substantially central portion of the operation panel 111. Buttons 113 such as a power system for turning on / off the power, an operation system for operating a paper cueing or ink flushing, a processing system for performing image processing, etc. are disposed on both sides of the panel 112. . Since the user can operate the button 113 while checking the liquid crystal panel 112 for confirmation, an erroneous operation can be prevented.

  As shown in FIGS. 1 and 2, the cartridge storage unit 120 stores the ink cartridges 121 shown in FIGS. 3 and 4 that store inks of various colors for printing (9 colors in this example) in a detachable manner. ing. The cartridge storage unit 120 is covered with a cartridge cover 122 having an L-shaped cross section. The cartridge cover 122 is attached so as to be rotatable in the direction of the arrow b shown in the figure around the rotation shaft at the rear end. Since the user can easily replace the ink cartridge 121 by lifting the cartridge cover 122 and opening the cartridge storage unit 120, work efficiency can be improved.

  The first rear paper feeding unit 130 is for automatic paper feeding (ASF), and as shown in FIGS. 1 and 2, the first rear paper feeding unit 130 opens and closes a first paper feeding port 131 that opens upward in a rectangular shape, A four-stage first paper support 132 having a function of supporting one sheet or a plurality of sheets to be fed is provided. The first paper support 132 is attached so as to be rotatable in the direction of the arrow c shown in the drawing with the rotation axis at the rear end as a center. As the paper fed by the first rear paper feeding unit 130, relatively thin paper (for example, plain paper or photographic paper having a thickness of about 0.08 mm to 0.27 mm) is used.

  Before using the ink jet printer 100, the user completes the setting by placing a finger on the hole 132 a provided in the center of the front of the first paper support 132 and lifting the first paper support 132 and pulling out the multistage portion. Therefore, the storage and management necessary for the detachable paper support becomes unnecessary. Furthermore, since the first paper support 132 has a multistage structure, it is possible to reliably support papers to be fed of various sizes. In addition, after the ink jet printer 100 is used, the first paper support 132 can be closed by pushing the multi-stage portion into the first paper support 132 to close the first paper feed port 131, thus preventing dust from entering the printer body. In addition, the first paper support 132 can be stored compactly.

  The second rear paper feeding unit 140 is for manual paper feeding. As shown in FIG. 2, the second rear paper feeding unit 140 has a function of opening and closing a second paper feeding port 141 opened in a rectangular shape toward the rear, and a sheet to be fed. A two-stage second paper support 142 having a function of supporting sheets is provided. The second paper support 142 is attached so as to be rotatable in the direction of the arrow d shown in the figure around the rotation shaft at the lower end. The sheet fed by the second rear sheet feeding unit 140 is a sheet having a thickness that cannot be fed at the conveyance angle in the first rear sheet feeding unit 130 (for example, an image material sheet having a thickness of about 0.29 mm to 0.48 mm). Or special paper). Further, since the first rear paper feeding unit 130 is used for automatic paper feeding (ASF), the paper is picked up by the paper feeding roller 82. Therefore, when paper dust adheres to the paper feeding roller 82 and accumulates, the paper is fed. There is a possibility that the paper roller 82 slips and causes poor feeding. For this reason, paper that easily generates paper dust (for example, Velvet Fine Art Paper with a thickness of about 0.48 mm or Ultra Smooth Fine Art Paper with a thickness of about 0.46 mm) is manually fed by the second rear paper feeding unit 140. Need to make paper.

  Before the user uses the ink jet printer 100, the user completes the setting by placing a finger on the upper part of the second paper support 142 and pushing down the second paper support 142 to pull out the multistage portion. Storage and management necessary for support are not required. Furthermore, since the second paper support 142 has a multistage structure, it is possible to reliably support papers to be fed of various sizes. In addition, after the ink jet printer 100 is used, the second paper support 142 can be closed by pushing the multi-stage portion into the second paper support 142 to close the second paper feed port 141, thus preventing dust from entering the printer body. In addition, the second paper support 142 can be stored compactly.

  As shown in FIG. 1, the paper discharge unit 150 has a function of opening and closing a paper discharge port 151 that opens in a rectangular shape toward the front and a function of stacking one or a plurality of paper to be discharged. 3 is provided with a two-stage stacker 152 of a first stacker 51 and a second stacker 52 shown in FIG. The first stacker 51 is attached to the tip end side of the second stacker 52 so as to be rotatable in the direction of the arrow e shown in the figure around the rotation axis. The second stacker 52 is attached so as to be able to project and retract by moving in parallel obliquely up and down with respect to the paper discharge outlet 151.

  Before using the ink jet printer 100, the user puts his finger on the top of the first stacker 51, rotates the first stacker 51 to open the paper discharge outlet 151, and touches the tip of the first stacker 51 with his finger. Since the setting is completed by picking and pulling the second stacker 52 in parallel and projecting the second stacker 52 obliquely upward, storage and management required for a detachable stacker are not required. Furthermore, since the stacker 152 has a multi-stage structure, sheets of paper of various sizes can be reliably stacked and loaded, and the recorded paper is always discharged from the front side, so that the user can The paper can be easily taken out. After the use of the ink jet printer 100, the second stacker 52 is moved obliquely downward and stored by pushing the tip of the first stacker 51 by hand, and the first stacker 51 is attached to the first stacker 51 with a hand. Since the one stacker 51 can be rotated backward to close the paper discharge port 151, dust can be prevented from entering the printer body, and the stacker 152 can be stored compactly.

  The front paper feed unit 160 is for manual paper feed, and includes a paper feed tray 161 disposed above the stacker 152 at the paper discharge outlet 151 as shown in FIG. The paper feed tray 161 is provided so as to be horizontally movable with respect to the paper discharge outlet 151. As the sheet fed by the front sheet feeding unit 160, a relatively thick sheet (for example, matboard sheet having a thickness of about 1.2 mm) that cannot be folded during conveyance is used.

  Before using the ink jet printer 100, the user gently pushes the front end of the paper feed tray 161 to remove the stopper of the paper feed tray 161 and the paper feed tray 161 protrudes from the paper discharge outlet 151. Further, after using the ink jet printer 100, the paper feed tray 161 is put in the paper discharge outlet 151 by pushing the front end of the paper feed tray 161 lightly so that the stopper of the paper feed tray 161 is engaged. Therefore, the arrangement space efficiency of the paper feed tray 161 can be increased.

  As shown in FIGS. 1 to 3, the waste ink collection unit 170 accommodates a waste ink tank 171 that stores waste ink and the like so as to be removable. The waste ink tank 171 stores waste ink or the like that is discarded when the recording head 202 is cleaned or the ink cartridge is replaced. When the waste ink tank 171 is full of waste ink or the like, the user only has to pull out the waste ink tank 171 and insert a new waste ink tank 171. Therefore, the user can easily replace the waste ink tank 171. be able to.

  As shown in FIGS. 3 and 4, the paper transport unit 180 is disposed from the first rear paper feed unit 130 and the second rear paper feed unit 140 to the paper discharge unit 150, and has an automatic paper feed mechanism ( Medium feeding device) 181, transport mechanism 182, and paper discharge mechanism 183. As shown in FIG. 4, the automatic paper feeding mechanism 181 takes up a hopper 81 that is lifted to feed the paper supported by the first paper support 132, and takes out and feeds the paper lifted by the hopper 81. A paper roller unit (feed roller unit) 82, a retard roller 83 that separates the paper that has been multi-fed by the paper feed roller unit 82 into only one sheet, and the remaining paper separated by the retard roller 83 is returned to the hopper 81. A paper return lever 84 and the like are provided.

  The hopper 81 is formed in a flat plate shape on which paper can be placed, and is disposed substantially in parallel with the rear wall. The lower end is located near the paper feed roller 82 and the upper end is located near the top of the rear wall. It is arranged to do. The hopper 81 is attached such that the other end of a compression spring (not shown) having one end attached to the rear wall is attached to the back surface on the lower end side, and the lower end side turns around the upper end side by expansion and contraction of the compression spring. It is installed.

  The paper feed roller (feed roller) 20 of the paper feed roller unit 82 is disposed in the vicinity of the lower end of the hopper 81, and rotates intermittently to frictionally feed the paper lifted by the hopper 81. ing. The retard roller 83 is disposed so as to be able to come into contact with the paper feed roller 20, and when the paper is fed by the paper feed roller 20, only the uppermost paper is frictionally separated from the lower paper. Yes. The paper return lever 84 is formed in a claw shape and is disposed in the vicinity of the paper feed roller unit 82, and the lower layer paper separated by the retard roller 83 is hooked on the claw and returned to the hopper 81. .

  As shown in FIG. 4, the transport mechanism 182 is provided with a paper feed roller 85 that feeds paper in the sub-scanning direction in synchronization with the recording operation, a driven roller 86, and the like. The paper feed roller 85 is disposed on the upstream side of the transport of the platen 203 and feeds the paper fed by the paper feed roller 82 together with the driven roller 86 to the platen 203.

  As shown in FIG. 4, the paper discharge mechanism 183 includes a paper discharge roller 87, a first jagged roller 88a, a second jagged roller 88b, and the like. The first knurled roller 88 a is disposed on the downstream side of the platen 203, and the second knurled roller 88 b and the paper discharge roller 87 are disposed on the downstream side of the first knurled roller 88 a so as to pass through the platen 203. The incoming paper is first discharged by the first jagged roller 88a, and is then nipped by the second jagged roller 88b and the paper discharge roller 87 to be discharged onto the stacker 152. Note that the first and second serrated rollers 88a and 88b are held by the same holding member (not shown).

  As shown in FIG. 4, the control unit 190 includes a main board 191 that constitutes a printer controller. The main board 191 is mounted with control elements and storage elements such as CPU, ROM, RAM, and ASIC (not shown) and other various circuit elements. Then, the paper conveyance unit 180, the recording unit 200, and the like constituting the print engine are controlled.

  As shown in FIG. 4, the recording unit 200 includes a carriage 201 that moves in the main scanning direction in synchronization with the recording operation, a recording head 202 that ejects ink in synchronization with the recording operation, and a flat sheet during recording. A holding platen 203 and the like are disposed. As shown in FIG. 3, the carriage 201 is inserted into the carriage guide shaft 204 and connected to the carriage belt 205 above the platen 203. When the carriage belt 205 is actuated by a carriage motor (not shown), Along with the movement, it is guided by the carriage guide shaft 204 to reciprocate.

  As shown in FIG. 4, the recording head 202 is mounted on the carriage 201 so as to be spaced from the platen 203 by a predetermined distance, and two types of black, for example, photo black and matte black ink, yellow, cyan, Seven inks of light cyan, magenta, light magenta, gray, and red can be ejected. That is, the recording head 202 is provided with a pressure generating chamber and a nozzle opening connected to the nozzle plate, and is controlled from the nozzle opening toward the sheet by storing ink in the pressure generating chamber and pressurizing it with a predetermined pressure. Ink droplets of different sizes are ejected. The platen 203 is disposed between the paper feed roller 85 and the paper discharge roller 87 so as to face the recording head 202, and supports the conveyed paper surface. Next, details of the automatic paper feeding mechanism 181 including the characteristic part of the present invention will be described with reference to the drawings.

  FIG. 5 is a perspective view showing the automatic paper feeding mechanism 181. The automatic paper feed mechanism 181 includes the paper feed roller unit 82, the retard roller 83, the paper return lever 84, and the like arranged in a paper feed frame 89 that surrounds the printer on both sides and the back side of the printer. It is installed. That is, the retard roller 83 is disposed below the paper feed roller 20, and a plurality (five in this example) of paper return levers 84 are arranged on both sides of the retard roller 83.

  FIG. 6 is a perspective view showing the paper feed roller unit 82, and FIGS. 7 and 8 are perspective views showing main parts thereof. As shown in FIG. 6, the paper feed roller unit 82 is provided on the both sides of the paper feed roller 20, the paper feed roller holder (roller holder) 21 that holds the paper feed roller 20, and the paper feed frame 89. A paper feed roller shaft (roller shaft) 82a that is rotatably supported at both ends is provided.

  As shown in FIGS. 6 and 7, the paper feed roller 20 is formed in a belt-like ring shape with rubber or the like. As shown in FIGS. 6 and 7, the paper feed roller holder 21 is formed in a cylindrical shape having a D shape when viewed from the side, and a substantially U-shaped opening 21a is formed in the linear portion. A groove 21b is formed on the inner side along the inner peripheral surface. The paper feed roller 20 is hung and held along the outer peripheral surface of the paper feed roller holder 21 and the inner peripheral surface of the groove portion 21b.

  As shown in FIG. 6, a plurality of (five in this example) auxiliary paper feed rollers 82b are integrally formed on the paper feed roller shaft 82a at predetermined intervals to prevent paper skew during paper feed. In addition, a paper feed roller holder attaching / detaching portion (holder) for attaching / detaching the paper feed roller holder 21 holding the paper feed roller 20 between the auxiliary paper feed roller 82b on one end side and the next auxiliary paper feed roller 82b. A detachable portion 82c is integrally formed.

  As shown in FIGS. 6 and 8, the paper feed roller holder attaching / detaching portion 82 c is formed on the inner peripheral surface of the opening 21 a when the opening 21 a of the paper feed roller holder 21 holding the paper feed roller 20 is fitted. A support portion 82ca that is supported by contact and a support portion 82cb that is supported by contact with both side surfaces of the paper feed roller holder 21 are provided. According to such a configuration, the paper feed roller holder 21 that holds the paper feed roller 20 attached to the paper feed roller holder attaching / detaching portion 82c always has the same phase. In the replacement work of the holder 21, the phase alignment work becomes unnecessary, the work time can be shortened, and the same recording state before and after the work can be substantially maintained.

  Further, as shown in FIG. 7, a depression (fixed portion) 21c is formed on the side surface of the paper feed roller holder 21, while, as shown in FIG. 8, the 82 support portion 82cb of the paper feed roller holder attaching / detaching portion 82c. A protruding portion (fixed portion) 82 cc is formed in. When the opening 21a of the paper feed roller holder 21 holding the paper feed roller 20 is fitted into the paper feed roller holder attaching / detaching portion 82c, the projecting portion 82cc is fitted into the recess 21c. This prevents the paper feed roller holder 21 from easily falling off the paper feed roller holder attaching / detaching portion 82c even during rotation.

  As described above, according to the ink jet printer 100 of the present embodiment, the paper feed roller unit 82 includes the paper feed roller holder 21 that holds the paper feed roller 20. Since it is configured to be detachable with respect to 82a, it is possible to replace only the feed roller holder 21 by removing the feed roller holder 21 without removing the feed roller shaft 82a, and to perform maintenance work of the feed roller unit 82. Can be easily performed, and the mounting position accuracy of the paper feed roller unit 82 can be maintained.

  Further, the paper feed roller holder attaching / detaching portion 82c in the paper feed roller shaft 82a is formed so that the phase is always the same when the paper feed roller holder 21 holding the paper feed roller 20 is mounted. During the work, the phase adjustment work of the paper feed roller 20 becomes unnecessary, and the maintenance work man-hour can be reduced. Further, the paper feed roller holder 21 is formed in a D shape when viewed from the side, and an opening 21a is formed in the linear portion so that the paper feed roller holder 21 is attached to and detached from the paper feed roller holder attaching / detaching portion 82c. Attachment / detachment to / from the roller holder attaching / detaching portion 82c can be easily performed from one direction, and maintenance work can be performed even when the sheet feeding roller unit 82 is incorporated in the ink jet printer 100.

  Further, the paper feed roller holder 21 and the paper feed roller holder attaching / detaching part 82c have a recess 21c and a protruding part 82cc for fixing the paper feed roller holder 21 holding the paper feed roller 20 to the paper feed roller holder attaching / detaching part 82c. By simply attaching the paper feed roller holder 21 to the paper feed roller holder attaching / detaching portion 82c, the paper feed roller holder 21 can be prevented from dropping from the paper feed roller holder attaching / detaching portion 82c. In addition, the user can perform the replacement operation of the paper feed roller 20 with confidence.

  Although an ink jet printer has been described as an example of the recording apparatus, any recording apparatus such as a facsimile apparatus and a copying apparatus can be applied. In addition to a recording apparatus, the meaning of a liquid ejecting apparatus that ejects a liquid corresponding to its use from a liquid ejecting head onto an ejected medium instead of ink and attaches the liquid to the ejected medium is, for example, a liquid crystal display or the like Color material jet head used for manufacturing color filters, electrode material (conductive paste) jet head used for electrode formation for organic EL display and surface emitting display (FED), bio-organic jet head used for biochip manufacturing, precision pipette The present invention can also be applied to an apparatus equipped with a sample ejection head or the like.

1 is a perspective view of an overall appearance configuration of an ink jet printer that is one of recording apparatuses according to an embodiment of the present invention, viewed obliquely from the front. FIG. It is the perspective view which looked at the whole external appearance structure of the printer of FIG. 1 from diagonally back. FIG. 2 is a perspective view illustrating an outline of an internal configuration of the printer of FIG. 1. FIG. 2 is a cross-sectional side view illustrating an outline of an internal configuration of the printer of FIG. 1. FIG. 2 is a perspective view showing an automatic paper feed mechanism of the printer of FIG. 1. FIG. 6 is a perspective view showing the paper feed roller unit of FIG. 5. It is a 1st perspective view which shows the principal part of FIG. It is a 2nd perspective view which shows the principal part of FIG.

Explanation of symbols

20 paper feed roller, 21 paper feed roller holder, 21a opening, 21b groove, 82 paper feed roller unit, 82a paper feed roller shaft, 82b auxiliary paper feed roller, 82c paper feed roller holder attaching / detaching part, 89 paper feed frame, 100 Inkjet printer, 101 housing, 102 main frame, 110 operation unit, 120 cartridge storage unit, 130 first rear paper feed unit, 140 second rear paper feed unit, 150 paper discharge unit, 160 front paper feed unit, 170 waste ink Collection unit, 180 paper transport unit, 181 automatic paper feed mechanism, 190 control unit, 200 recording unit, 201 carriage, 202 recording head, 203 platen, 210 printer cover

Claims (6)

In a medium feeding apparatus having a feeding roller unit for feeding a medium to be fed,
The medium feeding device, wherein the feeding roller unit includes a roller holder that holds the feeding roller, and the roller holder is configured to be detachable from a roller shaft. The attaching / detaching portion of the roller holder on the roller shaft is formed so that the phase is always the same when the roller holder holding the feeding roller is attached. Medium feeding device. The medium feeding device according to claim 2, wherein the roller holder is formed in a D shape in a side view, an opening is formed in the linear portion, and the roller holder is attached to and detached from the holder attaching / detaching portion. The medium feeding device according to claim 2, wherein the roller holder and the holder attaching / detaching portion include a fixing portion that fixes the roller holder holding the feeding roller to the holder attaching / detaching portion. A liquid ejecting apparatus that ejects liquid onto a medium to be ejected,
A liquid ejecting apparatus comprising the medium feeding device according to claim 1. A recording device for recording on a recording medium,
A recording apparatus comprising the medium feeding device according to claim 1.

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